JPS62128260A - Network control unit with extension connection function - Google Patents

Abstract

PURPOSE:To attain data communication automatically to a communication equipment connected to a destination extension by providing an automatic line connection means between an external line and an extension, applying the designation control of the extension in an opposite station at call and applying the automatic connection control of the external line to the intra-office extension at the incoming call. CONSTITUTION:When a dial signal representing an opposite station number is inputted from dial terminals 3a-3n in a call station network control unit, a touch tone signal is outputted. An incoming call from an external line is inputted to an incoming call decision section 10 of an incoming station network control unit via an external line terminal 1, then since the section 10 outputs an off-hook signal and an answer tone signal to the external line, an input gate 5b is opened. Since a line ready signal is outputted to a dial terminal in the call station network control unit, an input gate 5a is opened. When a dial signal of an opposite station extension number is inputted via the dial terminals 3a-3n and the input gate 5a, an internal designation section 6 outputs an extension touch tone signal to the external line.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to line connection of a network control device used for data communication, and in particular to automatic line connection between a plurality of extension lines and an outside line each connected to a plurality of communication devices. This invention relates to a network control device with an extension connection function.

[Conventional technology]

Conventionally, this type of network control device connects a public communication line or subscriber telephone line (hereinafter simply referred to as an outside line) and communication equipment on a one-to-one basis. Therefore, when making a call, a dial signal from a communication device or the like is used to control the calling of the other party's station through an outside line, and then a line connection is established between the communication device and the outside line.

When a call is received, the calling signal from the partner station is changed to N, thereby establishing a line connection between the outside line and the communication equipment.

In addition, in a private exchange, the network control device connects to the other party via an outside line, and when making a call, controls the connection of the local office/extension line to the network control device. Then, when a call is received, the outside leg is connected to the extension line through a manual operator such as a switchboard operator.

[Problem that the invention seeks to solve]

The conventional network control device described above does not have a control function for specifying an extension within the other station when a call is made, and also does not have a function to automatically connect an outside line to a designated extension within the own station when a call is received. Therefore, when a plurality of communication devices share an outside line, connection control between the line and the communication devices must be performed manually.

On the other hand, in order to automatically connect an outside line and a communication device without human intervention, there is a problem in that an outside line must be installed for each communication device.

[Means for solving problems]

The network control device with an extension connection function according to the present invention is equipped with an automatic line connection means for connecting an outside line and an extension, and when discharging, in addition to controlling the calling of the other station, it also controls the designation of the extension within the other station, and when receiving a call, it performs incoming call control. In addition, within your own station, as specified by the other party,
This system is designed to automatically control the connection of an outside line to an extension line.

[Effect]

According to the present invention, if an extension line is specified, an outside line and an extension line can be automatically connected.

〔Example〕

FIG. 1 is a block diagram showing an embodiment of a network control device with an extension connection function according to the present invention. In the figure, 1 is an external line terminal which is a connection terminal (connector) with an external line, 2a to 2
n is a terminal for transmitting data communication signals and control signals to communication equipment (not shown) +%! Terminals, 3a to 3n are dial terminals used as signal input terminals for the destination station number and extension number, 4 is an automatic dialing section, 5a and 5b are input gates,
Reference numeral 6 denotes an extension designation section, 7 a transmission selection section, 8 a line connection section for connecting an outside line and an extension, 9 an extension determination section, and 10 an arrival determination section.

In addition, FIG. 2 is a diagram showing the transmission and reception relationship of control signals and data (No. 8) during the calling operation and the terminating operation in FIG. ,1
3 is a receiving station network control device, and 14 is a communication device.

Next, the operation of the network control device with extension connection function having the above configuration will be explained with reference to FIG. First, in the calling station network control device 12, when a dial signal 15 representing the destination station number is input from the dial terminals 3a to 3n, the automatic dial section 4 receives this dial signal and outputs a dial pulse signal or touch tone signal 16. . Therefore, this dial pulse signal or touch tone signal 16 is outputted from the outside line terminal 1 to the outside line. Then, an off-hook signal and an answer are sent to confirm receipt of the call from the other station.
Wait for tone signal. Next, in the receiving station network control device 13, the incoming call from the outside line is passed through the outside line terminal 1 to the 7fi call determination unit 10.
When the incoming call determination section 10 outputs an off-hook signal 17a and an answer tone signal 17b to the outside line, the input gate 5b is opened. Next, in the calling station network control device 12, when the automatic dialing unit 4 receives the off-hook signal 17a and the answer tone signal 17b from the other station, the line ready signal 18 is output to the dial terminal, so that the input game) 5a oven. therefore,
When the dial signal 19 of the extension number of the other party is inputted through the dial terminals 3a to 3n and the input gate 5a, the internal designation section 6 outputs an extension touch tone signal 20 to the outside line. Next, in the receiving station network control device 13, when the extension determination unit 9 receives the extension touch tone signal 20, it reads the designated extension number, controls the line connection unit 8 to connect the outside line and the extension, and then sends the incoming call signal 21. is output to a designated extension terminal (for example, 2a). As a response to this incoming signal, a connect signal 22 is sent to the extension designation unit 9 at a designated extension terminal (for example, 2
When input from a), this extension specifying section 9 outputs an answer tone signal 23 to the outside line indicating that the connection is complete. Next, in the calling station network control device 12, when the automatic dialing section 4 receives this answer tone signal 23, the dial terminals 3a to
The line ready signal 24 is output again to 3n. Therefore, the communication device receiving this connect signal 2 to the extension terminal.
5 is input, the signal selection section 7 controls the line connection section 8 to connect the extension line in use and the outside line. At this stage,
Data communications 26 and 27 are performed between communication devices connected to the extension terminals of the calling station network control device and the receiving station network control device.

Then, when the data communication is completed and a disconnect signal 28 is input from the extension terminal in the calling station network control device 12, the transmission selection unit 7 receives this and outputs an on-hook signal 29 to the outside line, and further controls the own network. The device 12 is brought to an initial state. In the receiving station network control device 13, when the extension determining section 9 receives the on-hook signal, it outputs a line off signal 30 to the extension terminal, and can further bring the own station network control device into the initial state.

〔Effect of the invention〕

As explained in detail above, according to the network control device with an extension connection function according to the present invention, when an extension is specified, the connection between an outside line and an extension is automatically performed, so that there is no need for manual intervention such as at a switchboard. This eliminates the need for automatic data communication from a computer, etc. to a communication device connected to the other party's extension. Furthermore, since a plurality of communication devices can share an outside line, the number of outside lines used can be reduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a network control device with an extension connection function according to the present invention, and FIG. 2 shows the transmission/reception relationship of control signals and data signals during a calling operation and a call receiving operation in FIG. 1. It is a diagram. 1.--external terminal, 2a~2n-.Φ.internal terminal, 3
a-3n...0 dial terminal, 4...dial section, 5a and 5b--input gate, 6...extension designation section, 7.e-fist transmission selection section, 8...・Line connection section, 9φ... Extension determination section, 10... Call reception determination section,
11 and 14...communication equipment, 12...calling station network control device, 13@fist...terminating station network control device, 15-2
5 and 28-31...control signal, 26 and 27
...Data signal.

Claims (1)

[Claims] In a network control device connected to a public communication line or a subscriber telephone line and used for data communication, an automatic dialing section that controls calling of the other party's station at the time of a call, an extension designation section that controls the designation of an extension within the other party's station, A transmission selection unit that determines whether the call is within your own station or an extension; an incoming call determination unit that determines whether an external line is received at your own station when a call arrives; What is claimed is: 1. A network control device with an extension connection function, comprising: and a line connection section that is connected to communication equipment and connects to a plurality of extensions within its own station.